The HA-99121 kit has been designed to address the question of correct and rapid measurement of pH directly in soil. Every item in this kit has been made to facilitate measurements in the field without compromising accuracy.

Specifications 
• pH Range: -2.00 to 16.00 pH, Resolution: 0.01 pH, Accuracy: ± 0.02 pH
• Temperature Range: -5.0 to 105.0°C / 23.0 to 221.0°F, Resolution: 0.1°C / 0.1°F, Accuracy: ± 0.5°C (up - 60°C), ± 1°C/± 1.0°F (up - 140°F), ± 2°F (outside)
• Automatic pH Calibration, 1 or 2 point with 2 sets of memorized buffers (pH 4.01/7.01/10.01 or 4.01/6.86/9.18) 
• Automatic Temperature Compensation, 5 to 105°C (23 to 221°F)
• HA-1292D, refillable, glass body, with internal temperature sensor, DIN connector and 1 m cable (included) 
• 3 x 1.5 V "AA" Battery / approx. 1500 hrs of continuous use; auto-off after 8 min of non-use 
• Environment: 0 - 50°C (32 to 122°F); RH max 100% 
• 5.9" x 3.1" x 1.4" (150 x 80 x 36 mm)
• 7.4 oz (210 g)